Compound rotary engine.



J. q. BENDIXSON; COMPOUND-ROTARY ENGINE.-

APPLICATION TILED OCT. 2, 1912.

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J. 0. BENDIX'SON.

Patented M21114, 1913.

2 SHEETS-SHEEI 2.

' scription of the invention,

- tubular member To all whom it may concern:

UNITED STATES PATENT OFFICE.

moon-c. nnnmxson, or s'rAnr. NORTH nnxo'rn.

COMPOUND ROTARY ENGINE.

v Specification of Letters Patent. Application tiled October 2,

PatentedMar. l, 1.818. 1912. Serial No. 723,536.

it known that I, JACOB a citizen of the United .States, residing at Stady, in. the county of Divide, State of North Dakota, have invented certain new and usefnl Improvements-in Com ound Rotary Engines; and I do hereby eclare the following to be a full, clear, and exact -(lesuch as will enable others skilled in the art to which it'appertains to make and use the same.

This invention relates to rotary engines and particularly those of the compound t *pe. x 3 The object of the inventionresides iii the provision of a rotary'engine of the compound type which will embody few parts and which will be efficient in operation and which may be manufactured at a comparativelysmall cost.

With the above and other objects in view the invention consists in the details of construction and in the arrangement and combination .of parts to be hereinafter more fullydescribed and particularly pointed out in the appended claim. a In describing the invention in detail reference will be had to the accompanying drawings, wherein like characters of reference denote correspondlng parts in the several views, and in which- I Figurel is a view in elevation of a rotar engine constructed in accordance with the invention. Fig. 2 a plan view of what is shown in Fig. 1. Fig. 3, a side elevationwith the end member of the engme casing removed,

the cylindrical wall of the casing being partly in section. Fig. 4 a section on the line of Fig.3. Fig. 5 is a view similar to Fig. 1,

showing the reversing gear in section. Fig.

6 a view similarto Fig. 5 showing the reversinq gear in the extreme position om that disclosed in Fig. 5. Fig. 7 a detail perspective view of the piston and its associated bearing, and Fig. 8 a detail perspeo- ,tive view of the rotatable ring which (11- vidcs the interior'of the engine casing into inner andouter steam expansion chambers. Referring to the drawings, the engine is shown as comprising a casing A which includes a cylindrical side wallformed of a.

10 and endwallsll2'and 13 which close the ends of the tubular' -member 1p and. are detachablv secured to the latter by means of bolts 14. 5 Rotatably mounted in the end walls 12 and 13 is adrive shaft 15 which has fixed thereon within the casing A a sleeve 16. Rotata-bly mounted in corresponding grooves in the end walls 12 and 13 eccentric .to the shaft 15 is a rin'g 17 which divides the interior of the casing A into an i 'ner steam expansion chamber 18 and an outer steam expansion chamber 19,

thevolume of the latter-bein considerably in excess of the .volume' o the former. Steam is adapted-to be supplied to and exhausted from the chamber 18 through ports 20 and 21 formed in theend wan 13, and likewise steam is adapted. to be h ports 22. and 23 formed in-the side wall oft e casIng.' Thering 17. is provided with an open mg 24 in which is rotatably disposed a hearing This bearing is-provided with an opening 26 in which is adaptedto slide a piston 27 the inner end of which if! rigidlysecured tothe shaft 15 and-sleeve 10 so that the rotation of said piston will efiect a' 'rotntion,

of the shaft 15. 27 terminates in an arcuatc cross head which bears against the inner wall oil-the tubular member 10 of the casing. and is adapted during the movement of the'pistpn to cover and uncover the ports 22 and 23.- f

It will be noted that the eccentric relation of the ring 1'?" to the sleeve lois'such that aportion of the latter. encages The outer end of the piston movement of the piston 27. It will also be noted'in this connection that-the outer wall supplied to and exhausted from the chamber 19 .throu v the inner wall, Y of the ring 17 during the rotation of the sleeve and ring under the influence of theof the ring 17 engages the inner wall of-the I tubular member 10' of the casing at a point diametricallv opposite of the sleeve 16 with the inner wall of said recesses 29 and 30 arranged relation and adapted to receive the head 28 as the iston ports 22 and 23 as willbeapnarent.

Mounted exteriorlyof the casing A upon? 1 from the engagement ring. the nort-s 20 and 2l'being arranged 011"" on onnosite sides'of the onening 24 with 'in staggered- 27 passes betweenthe the end wall 13 are horizontallv' disposed Imner andlower cvlindrical casinQ'Sfil an 32 respectively.

The interiors of the'casings' and '32 are connected by a vertical p pe I is connected with the interior of the casing by apipe 37. Likewise the port is connected 'to the interior of the casing by means of a pipe 38, while the port 21 is gconnected with the interior of casing 32 by mea nsof a pipe 39.

Slidably mounted in the casing 31 is a valveB which is provided with a by-pass 40 -whereby said valve may be moved longitudinally of the casing 31 so as to afford communication between the exhaust pipe 34 and the pipe 37 or between the exhaust pipe 34 and the pipe The valve B is further provided at each end and at diametrically opposite points from the by-pass with longitudinal grooves ll and 42 which are adapted to establish communication between the pipe 33 and the pipe 37 and also between the pipe 33 and the pipe 2-36, the position of the valve 13 in the casing 31 determining which communication is established. Slidably mounted in the casing 32 is a valve C which is constructed similar to the valve R and is adapted to controlcommuuication bethveen the pipe 33 and pipe 30 and between the pipe 35 and pipe 38. and also between the steam supply pipe 35 and the pipes 38 and 39. The valveB is provided with a stem 43. while the valve C is provided with a stem H. said stems +3 and 44 being slidablv arranged through corresponding ends of respective casings 3i and 32. livotally mounted upon a bracket. -15 carried bv the casing A is a valve operating lever 1143, .said levcr being connected by a lint: 47 to the stem 4 and l a linl; -l8 to the-stein -ll-, it being noted that the connection bctwccu the lever and the stem 43 is on one side of the pivot of said lever. while the connection between the lcvcr and the stem 44 is on the other side of the. pivot of said lever. 3 this construction it will be apparent that the valves 13 and (1 will always be maintained in opposite positions inthc casings 31 and 32 respectively.

Assuming that it is desired to rotate the shaft 15 in the direction indicated by the arrow in Fig. 3 the valves B and are moved through the medium of the lever 46 to the position shown in Fig. 5. Steam will then pass through the supply pipe 3.) into the casing 32 and thence through the pipe 39 and port- 21 into the chamber 18 and 831-" pand against the piston 27 so as to effectthe rotation of the shaft 15. As soon as the piston 27 passes the port 20 the steam behind same will discharge through said port, pipe 38, by-pass of the valve C, pipe 33, groove 42 of the valve B, pipe 36, port 22 and thence into the chamber 19 where it will again expand and act upon the piston 27 to eiiect the rotation thereof. As soon as the cross head 28 of the piston 27 has passed clear of the port the steam in the chamber 15) behind the piston 27 will exhaust through the pipe 37 by-pass 40 and pipe 34. T1 it is desired to reverse the rotation of the shaft 15 it is only necessary to shift the positions of the valves B and C from that' shown in Fig. 5 to that shown in Fig. 6.

ll'hat I claim is:

compound rotary engine comprising a q lintlrical casing, a shaft rotatably mounted in the end walls of said casing, a ring rotatably mounted in the endwalls of said casing eccentrically to said shaft and having its outer and inner walls in engagement with the inner wall of the side of the casing and with the periphery of said shaft at diametrically opposite points respectively and dividing the interior of the casing into inner and outer steam expansion chambers, said casing having its side wall provided with ports opening into the outer steam ex' pansion chamber on opposite sides of its point of cngagei'nent with said ring and one of its end walls provided with ports opening into the inner steam chamber on oppo site sides of the point of engagement between the ring and shaft, a radial piston "having one end fixed to the shaft and slidably arranged through said ring, a pair of valve casings mounted on the wall of the engine casing a pipe connection between said valve casings. a steam supply pipe communicating with one of said valve casings. pipeconnections between the ports of the outer steam chamber and said last named valve raising. pipe connections between the other valve casing and the ports of the inner steam chamber, an exhaust pipe leading from last named valve casing. valves slidably mounted in said valve casings respectively. and moans for simultaneously and reversely sliding said valves.

l'n testimony whereof, I aflix m v signature, in presence of two witnesses. a

JACOB C. BENDIXSON.

ll'it-nesscs:

ll. ll. Laxnno, S. ll. Ronmsozv.

- Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents,

Washington; D. C. I Y 

